I've decided to revisit Pokemon yellow after not having touched it for years and decided (for nostalgic reasons to go with pikachu, charmander, squirtle, bulbasaur, and pidgey in my lineup. I'm looking for recommendations for a 6th. A psychic type seems the obvious choice but I'm open to any suggestions. Forgive my ignorance it's been years lol thanks in advance

Ps I'm playing on an emulator on my phone so I'm not sure trading or anything is an option.